445supp - PHYS 445 Supplement - Quick and dirty quantum...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PHYS 445 Supplement - Quick and dirty quantum mechanics S - 1 © 2001 by David Boal, Simon Fraser University. All rights reserved; further resale or copying is strictly prohibited. Supplement - Quick and dirty quantum mechanics for PHYS 445 What's Important: old quantum theory particle in a 1-D box rigid rotor harmonic oscillator Old quantum theory A very simple approach to quantization is based upon interference, where the wave in question comes from de Broglie. In systems with repetitive motion, the idea is to demand that the motion contain an appropriate number of de Broglie wavelengths to form a constructive standing wave. The de Broglie wavelength, as we recall is = h / p where = de Broglie wavelength h = Planck's constant p = particle momentum. We reason by example. 1. Particle in a 1-dimensional box Here, the motion is in one dimension between two perfectly reflective walls. Since there is no potential energy gradient in the region between the walls, the particle's energy and momentum must be constant. We quantize this system by demanding that
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/07/2009 for the course PHYS 445 taught by Professor Davidboal during the Spring '08 term at Simon Fraser.

Page1 / 3

445supp - PHYS 445 Supplement - Quick and dirty quantum...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online